colevent.html
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<TITLE>Listening for Column-Related Changes in a JTable Component
(Java Developers Almanac Example)
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<B><A HREF="../javax.swing.table/pkg.html#Events">Events</A></B><font color="#666666" SIZE="-2">
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<h3>
e965.
Listening for Column-Related Changes in a JTable Component</h3>
Events are fired whenever a column is added, removed, resized,
and moved.
<pre>
<font color="#0066ff"><i>table</i></font>.getColumnModel().addColumnModelListener(
new MyTableColumnModelListener(table));
public class MyTableColumnModelListener implements TableColumnModelListener {
JTable table;
// It is necessary to keep the table since it is not possible
// to determine the table from the event's source
public MyTableColumnModelListener(JTable table) {
this.table = table;
}
public void columnAdded(TableColumnModelEvent e) {
int fromIndex = e.getFromIndex();
int toIndex = e.getToIndex();
// fromIndex and toIndex identify the range of added columns
}
public void columnRemoved(TableColumnModelEvent e) {
int fromIndex = e.getFromIndex();
int toIndex = e.getToIndex();
// fromIndex and toIndex identify the range of removed columns
}
public void columnMoved(TableColumnModelEvent e) {
int fromIndex = e.getFromIndex();
int toIndex = e.getToIndex();
// fromIndex and toIndex identify the range of columns
// being moved. In the case of a user dragging a column,
// this event is fired as the column is being dragged
// to its new position. Also, if the column displaces
// another during dragging, the fromIndex and toIndex
// show its new position; this new position is only
// temporary until the user stops dragging the column.
}
public void columnMarginChanged(ChangeEvent e) {
// The width of some column has changed.
// The event does not identify which column.
}
public void columnSelectionChanged(ListSelectionEvent e) {
// See <a href="../javax.swing.table/SelEvent.html" class="eglink"><font size="-1"><b>e963</b> Listening for Selection Events in a JTable Component</font></a>
}
}
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Related Examples
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e963. <a class="eglink" href="SelEvent.html?l=rel">
Listening for Selection Events in a JTable Component
</a>
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e964. <a class="eglink" href="ValueEvent.html?l=rel">
Listening for Changes to the Rows and Columns of a JTable Component
</a>
<br>
e966. <a class="eglink" href="ColHeadEvent.html?l=rel">
Listening for Clicks on a Column Header in a JTable Component
</a>
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<table width="600" CELLSPACING="0" CELLPADDING="2" BORDER="0">
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<td align="left">
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See also:
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Cells">
Cells
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Column%20Heads">
Column Heads
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Columns">
Columns
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Editing">
Editing
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Layout">
Layout
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Rows">
Rows
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Scrolling">
Scrolling
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Selection">
Selection
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Sorting">
Sorting
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Table%20Model">
Table Model
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Tool%20Tips">
Tool Tips
</a>
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